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According to fashion website Net-a-Porter, the top has a row of small buttons down the back, but Kate put hers on with the buttons at the front.
The mother-of-three completed her look with pants from British fashion chain, Jigsaw.
NET-A-PORTER
NET-A-PORTER
The 37-year-old paid a visit to the centre to learn about their work being done to support young kids and their families.
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Kate also revealed that her son, Prince Louis, was "bombing" around on his walker: "Louis just wants to pull himself up all the time. He has got these little walkers and is bombing around in them."
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